This uses 2 te xtures, one for a main color variation, and the other for the bump/roughness. This is very effective for creating stone surfaces. Try these settings on a primitive plane.
Object Attribs R G B Value
Color = 136 118 128
Specular = 153 134 132
Dithering = 255
Phong = On
All others at 0.
Texture 1: fractalcolor Texture 2: bump
Parameter Value Parameter Value
Initial Scale 15 Initial Scale 5
# of scales 5 # of scales 4
Scale Ratio 0.4 Scale Ratio 0.5
Amplitude Ratio 0.4 Amplitude Ratio 0.5
Time Ratio 0.4 Alt. Adjust 3
Time 0 Fade 0..1 0
Base->1 Trans 0.3 Axis placement left at default
1->2 Trans 0.6
Color 1 End 1
Color 1 Red 70
Color 1 Green 60
Color 1 Blue 60
Color 2 Red 255
Color 2 Green 240
Color 2 Blue 240
Fade 0..1 0
Axis placement left at default
When rendered an off gray stone will be created. Great for caverns, dungeons and so on. Just slap it onto the walls or columns to give it good-ol' natural look.